The Biggest Oil Spills in History

If current estimates for the Deepwater Horizon oil leak in the Gulf of Mexico are correct, the massive spill could eventually dwarf that of Exxon Valdez spill of 1989 — previously the largest in U.S. history — by as much as three times. At a rate of 5,000 barrels a day, for an estimated 90 days, well over 20 million gallons of crude could be pumped out onto the Louisiana coastline.